Moje ime je Adi Pandžić

DOBRODOŠLI

Inžinjering

Mašinski inžinjer i doktor iz oblasti 3D printanja

Produkt dizajn

DIZAJNIRAM PROIZVODE KOJE LJUDI VOLE

3D Print

3D Printam vaše ideje u stvarnost

3D Print u medicini

Više od 5 godina 3D printanja u medicini

Edukacije

3D Print i Solidworks Edukator

Startupi

Više od 10 godina mentorstva i rada sa startupima

Vijesti

Sarajevo Unlimited 2025

Na konferenciji Sarajevo Unlimited 2025 učestvovao sam na panelu „e-Health u digitaliziranom svijetu“, gdje smo razgovarali o primjeni 3D printanja u medicini i značaju ove tehnologije za unapređenje dijagnostike, planiranja operacija i edukacije medicinskog osoblja. Predstavili smo i rezultate višegodišnjeg rada na implementaciji 3D printanih anatomskih modela u bolnicama širom Bosne i Hercegovine te naglasili potrebu za jačom institucionalnom podrškom kako bi se ubrzao daljnji razvoj. Tokom konferencije organizovane su i dvodnevne radionice posvećene praktičnoj primjeni 3D printanja u medicini. Ovo je moje deseto učešće na Sarajevo Unlimited, projektu koji već deset godina povezuje stručnjake i inovatore iz cijelog regiona.
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Pričali smo o 3D printanju na ARTES TECH 2025

Bila mi je izuzetna čast učestvovati na ARTES TECH 2025 tehnološkoj konferenciji, gdje sam održao predavanje na temu “Aditivna Proizvodnja – 3D Printanje, od ideje do funkcionalnog proizvoda”. Konferencija je donijela brojne zanimljive teme iz oblasti IT-a i tehnologije, kvalitetne govornike te inspirativne diskusije, a posebno vrijedi istaći izvanredan ambijent u kino sali koji je dao dodatnu vrijednost i poseban doživljaj cijelom događaju. Zahvaljujem se organizatorima, predavačima i svim učesnicima koji su svojim doprinosom obogatili ovaj značajan skup.
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Govornik na 3D Experience World 2025

Na ovogodišnjoj 3D Experience World 2025 konferenciji u Houstonu imao sam čast biti jedan od govornika zajedno sa Robertom Jamieson-om iz AMD-a i Kenom Denton-om iz HP-a. Tokom sesije, fokus je bio na optimizaciji performansi SolidWorks radnih stanica, uključujući RealView i Large Model Performance mode. Kroz svoju prezentaciju, podijelio sam iskustva o tome kako su HP i AMD sistemi značajno unaprijedili moj rad u Solidworks-u, omogućavajući rad sa izuzetno kompleksnim 3D modelima. Nevjerovatno iskustvo i sjajna prilika za razmjenu znanja sa vodećim stručnjacima u industriji!

3D Experience World 2025, Houston - USA, predstavio sam THE BEAST traktora

Proveo sam nevjerojatno vrijeme na 3D Experience World 2025 konferenciji u Houstonu, SAD! Za sve SOLIDWORKS korisnike—ovo je događaj koji morate posjetiti! Bilo je pravo zadovoljstvo ponovo biti tamo, okružen nevjerojatnim ljudima iz AMD i HP timova. Na konferenciji smo predstavili moj do sada najkompleksniji 3D CAD model – THE BEAST traktor, sa preko 6500 dijelova. Ovaj model je predstavljen kako bi pokazao nevjerovatne performanse najnovijih HP radnih stanica i laptopa pokretanih sa AMD hardverom, uključujući ZBook Ultra G1a i Z2 Mini, koji pružaju izuzetnu snagu, brzinu i pouzdanost za profesionalne korisnike.
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Nagrada za iznimne rezultate naučno-istraživačkog rada 2023. godine

Ove godine, dobio sam prestižnu Nagradu za iznimne rezultate naučno-istraživačkog rada za 2023. godinu, koju dodjeljuje Univerzitet u Sarajevu. Ova nagrada predstavlja veliku čast i priznanje za moj rad, ali i za napore cijelog tima. Veliko hvala svim kolegama koji su radili sa mnom na istraživanjima i svojim doprinosima omogućili mi da postignem ovaj značajan uspjeh.

Najkompleksniji 3D CAD model do sada za AMD i HP

Završio sam THE BEAST traktor 3D CAD model za AMD i HP, kreiran koristeći Dassault Systèmes SOLIDWORKS. Ovo nije bio običan dizajn – sa preko 6500 dijelova, predstavlja najkompleksniji model koji sam do sada dizajnirao u SolidWorks-u! Ovaj "beast" radi bez vozača, bežično se kreće putem GPS-a! Dizajniran da prikazuje najnovije mogućnosti i budućnost autonomnih teških mašina, svaki dio ovog traktora odražava snagu preciznog inženjeringa i inovativnog dizajna. Pridružite mi se na ovom putovanju od koncepta do realizacije i otkrijte šta SolidWorks može postići sa pravim vizijama i strašću! Čitav proces dizajna pogledajte na linku ispod.
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Govornik na HP CEE Workstation Summit 2024 - Dubrovnik

Imao sam čast biti govornik na HP CEE Workstation Summitu, održanom od 21. do 24. oktobra 2024. u Dubrovniku. Ovaj prestižni događaj, uz podršku HP-a, AMD-a, Intela i NVIDIA-e, okupio je vrhunske stručnjake i partnere iz CEE regije. Summit je održan u luksuznom hotelu Dubrovnik Palace, s predivnim pogledom na Jadran. U svojoj prezentaciji govorio sam o saradnji s HP-om i AMD-om, dijeleći iskustva u razvoju inženjerskih rješenja uz HP Workstation tehnologiju. Bilo je inspirativno razmijeniti ideje s vodećim stručnjacima iz industrije.
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Uspješno smo završili 3D printani model temporalne kosti za hiruršku edukaciju

Nakon nekoliko mjeseci napornog rada kroz naučnoistraživački projekat sa ASA Bolnicom, uspješno je završen 3D printani model temporalne kosti za hiruršku edukaciju! Sljepoočna kost igra vitalnu ulogu u zaštiti mozga i potpornih struktura. To je složena i osjetljiva kost, neophodna za funkcije kao što su sluh i ravnoteža. Zbog njene prirode, hirurzi moraju imati precizno znanje o anatomiji temporalne kosti, zbog čega je specijalizirana obuka ključna. 3D printani model pruža hirurzima na obuci praktičnu priliku da istraže složenu strukturu sljepoočne kosti, poboljšavajući svoje vještine prije izvođenja operativnih zahvata u stvarnom životu. Ova vrsta praktične obuke ključna je za smanjenje hirurških rizika i poboljšanje ishoda pacijenata. Projekat potpisuju dr. Adi Pandzic Pandžić i dr. Merim Jusufbegović u saradnji sa ASA Bolnicom, voditeljem Odjeljenja Otorinolaringologije, Mr. Sc. Hasan Altumbabic , dr. med., Specijalistom otorinolaringologije i hirurgije glave i vrata, te dr. Daria Ler, direktoricom ASA Instituta (ASA Institute Bosnia and Herzegovina). Uz pomoć ovog modela bit ce organizovane edukacije koje će predvoditi Prof. dr. Baumgartner.

3D štampani edukacijski model za obuku transradijalnog pristupa

U saradnji s Dr. Merimom Jusufbegovićem i CNT timom (Centar za Napredne Tehnologije), uspješno smo završili još jedan inovativan naučnoistraživački projekat – 3D štampani model za obuku transradijalnog pristupa i poboljšanje vještina medicinara. Ovaj model omogućava doktorima i medicinskom osoblju da se treniraju u pronalasku arterije i izvođenju preciznih uboda pod nadzorom ultrazvuka. Finalni korak je dodavanje balističkog gela, koji će simulirati tkivo i omogućiti još realističniju obuku. Projekat, u potpunosti razvijen u Bosni i Hercegovini, uskoro će biti predstavljen na SaMED konferenciji, gdje ćemo razgovarati o primjeni 3D štampe u medicini.

Novi projekat s kompanijom Dive Solutions GmbH: Kreiranje 3D CAD modela za napredne CAE analize

Započeo sam saradnju s kompanijom Dive Solutions GmbH, gdje je moj zadatak kreiranje kompleksnih i funkcionalnih 3D CAD modela koji će biti korišteni za prezentaciju njihovog softverskog rješenja za CAE analize i animacije fluida. Dive CAE softver omogućava inženjerima da simuliraju složene slobodne površinske tokove, termodinamiku, složene pokrete, površinsku napetost, višefazne tokove i kompleksne materijale, koristeći inovativni mesh-free Lagrangian SPH metod. Ovo rješenje pruža brze, skalabilne i precizne simulacije, omogućavajući istraživanje kompleksnih dizajnerskih prostora u kratkom vremenu, uz jednostavno i sigurno korisničko iskustvo dostupno putem web preglednika.
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Postao sam Solidworks Champion

Sa ponosom mogu podijeliti da sam postao SolidWorks Champion, član globalne zajednice vrhunskih inženjera i dizajnera koji pomjeraju granice 3D CAD inovacija. Ova prestižna titula dodjeljuje se stručnjacima koji svojim radom, projektima i edukacijom doprinose razvoju SolidWorks zajednice. Biti SolidWorks Champion znači biti priznat kao lider u industriji, imati pristup ekskluzivnim resursima i najnovijim tehnologijama, te aktivno učestvovati u oblikovanju budućnosti inženjeringa.

3D Isprintali smo ljudski stomak

U saradnji sa timom istraživača, Merimom Jusufbegovićem i Murisom Bečirčićem, uspješno smo 3D odštampali ljudski želudac kako bismo unaprijedili istraživanja u medicinskom snimanju. Koristeći pčelinji vosak, gips i epoksidnu smolu, kreirali smo pristupačan i precizan model koji oponaša ljudska tkiva. Naši testovi su pokazali da fantom ima gotovo identične karakteristike kao pravo ljudsko tijelo, posebno kada je riječ o masnom tkivu, dok su mišići i kosti pokazali nešto više vrijednosti u poređenju s pacijentima. Ova inovacija može pomoći u razvoju novih tehnika snimanja, poboljšati dijagnostiku i učiniti medicinske pretrage sigurnijima i preciznijima. Objavljeni naučnoistraživački rad možete pročitati na linku ispod.
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Završen 3D CAD model za AMD i HP za 3D Experience World 2024

Završio sam 3D CAD model za kompanije AMD i HP koji će biti predstavljen na 3D Experience World konferenciji 2024, koja se ove godine održava u Dallasu, SAD. Tokom ovog projekta, imao sam priliku testirati najjaču profesionalnu Radeon PRO grafičku karticu, AMD Radeon PRO W7900 sa 48GB RAM-a, kao i nevjerovatnu HP Z6 G5 radnu stanicu s AMD Ryzen 7975wx procesorom. Ovaj moćan sistem omogućio mi je da kreiram do sada najljepši chopper motocikl koji sam dizajnirao. Cijeli proces dizajniranja ovog projekta možete vidjeti na linku ispod.
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3D Model amortizera koristi Dassault Systèmes za SOLIDWORKS Visualize

Kompanija Dassault Systèmes® koristi 3D model amortizera koji je dizajnirao DR.PAX za SOLIDWORKS® Visualize, omogućavajući svakom korisniku da iskoristi ovaj model i testira mogućnosti Solidworks Visualize-a. Ovaj render 3D modela takođe se koristi kao startup prozor prilikom pokretanja programa Solidworks Visualize, pružajući korisnicima vizualnu predstavu o mogućnostima koje ovaj alat nudi.
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Uspješno završen razvoj prototipa StarNose uređaja

Završio sam razvoj prototipa StarNose uređaja, inovativnog rješenja za filtraciju zraka startup kompanije Nosealien. Prototip je izrađen SLA 3D printanjem, omogućavajući visoku preciznost i funkcionalnost. StarNose je body-invasive sistem koji trenutno filtrira zagađeni zrak, štiti disajne puteve i poboljšava osjetila. Njegov kompaktan dizajn i napredni mehanizam pružaju čistiji zrak, bolji doživljaj okoline i jednostavnu upotrebu, postavljajući nove standarde u ličnoj zaštiti od zagađenja.

Koncept dizajn StarNose – Revolucionarni uređaj koji redefiniše disanje

Završio sam konceptualni dizajn i razvoj prototipa StarNose uređaja, revolucionarnog rješenja za filtraciju zraka razvijenog od startup kompanije Nosealien. Ovaj body-invasive sistem pruža trenutnu zaštitu od zagađenja, alergena i patogena, omogućavajući korisnicima da udišu čist i pročišćen zrak. Njegov elegantan dizajn skriva snažan mehanizam koji transformiše zagađeni zrak u svježinu pri svakom udisaju. StarNose ne samo da štiti disajne puteve, već i poboljšava čula, pružajući intenzivnije mirise, jasnije boje i dublji doživljaj okoline. Zahvaljujući visokoj efikasnosti, jednostavnoj upotrebi i minimalnom održavanju, postavlja nove standarde u personalnoj zaštiti od zagađenja.
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Završen koncept dizajna za Zero Gravity stolicu Arcathrone

Završio sam konceptualni dizajn za Arcathrone, inovativnu Zero Gravity stolicu koja kombinuje ergonomiju, inženjersku preciznost i moderan dizajn. Zero Gravity stolice su inspirisane NASA-inim istraživanjima i omogućavaju tijelu položaj u kojem su pritisci na kičmu, zglobove i mišiće minimalni, pružajući osjećaj lebdenja i rasterećenja. Koriste se u medicini, rehabilitaciji, produktivnosti i wellnessu. Arcathrone je dizajniran s fokusom na optimalnu podršku tijelu kroz ergonomski oblikovan naslon, prilagodljive oslonce i sofisticirani mehanizam za podešavanje nagiba. Sljedeći koraci uključuju prototipiranje i testiranje kako bi se stvorio proizvod koji redefiniše udobnost sjedenja. Čitav proces dizajniranja pogledajte na linku ispod.
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Dizajn chopper motocikla za AMD i DELL kompanije

Sa velikim zadovoljstvom objavljujem da sam uspješno završio dizajn 3D CAD modela chopper motocikla za kompanije AMD i DELL, korištenjem SolidWorks softvera. Model je sastavljen od više od 2500 dijelova, a predstavljen je na 3D Experience World 2023 konferenciji u Nashville-u, SAD, na AMD i DELL štandovima. Ovaj kompleksan model korišten je za testiranje visokih performansi novih AMD Radeon Pro grafičkih kartica i AMD Ryzen procesora, kao i za demonstraciju moći DELL radnih stanica opremljenih s ovim komponentama, koje su osmišljene za profesionalne korisnike u industrijama kao što su inženjering, dizajn i vizualizacija. Predstavljanje ovog projekta na prestižnoj konferenciji potvrdilo je vrhunske performanse hardverskih rješenja, dok je moj 3D CAD model poslužio kao pravi izazov za testiranje izuzetnih mogućnosti računalnih sistema koje podržavaju složene 3D modele i radne tokove.
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Inovatori iz BiH 3D štampanjem smanjili zračenje u dječijoj radiologiji

U saradnji s Merimom Jusufbegovićem, završio sam naučno istraživanje koje je rezultiralo smanjenjem zračenja djece tokom CT snimanja za čak 40%. Ključni doprinos je razvoj prvog 3D štampanog fantoma glave i to u Bosni i Hercegovini, koji omogućava optimizaciju parametara snimanja bez gubitka dijagnostičke tačnosti. Naše istraživanje je objavljeno u radu "Utilisation of 3D Printing in the Manufacturing of an Anthropomorphic Paediatric Head Phantom for the Optimisation of Scanning Parameters in CT", koji možete pročitati na linku ispod.
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Uspješno sam doktorirao iz oblasti 3D Printanih materijala

Na Mašinskom fakultetu Univerziteta u Sarajevu uspješno sam odbranio doktorsku disertaciju na temu "Prilog procjeni mehaničkih osobina FDM printanih polimernih materijala sa različitim dizajnom ispune". Ovo istraživanje, prvo te vrste na našem univerzitetu, bavi se uticajem dizajna ispune na mehaničke osobine FDM printanih polimera te razvojem matematičkih modela za njihovu procjenu. Na linku ispod možete besplatno preuzeti moju desertaciju.
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Doprinos razvoju prve bosanskohercegovačke četkice za zube – Cawex

Imao sam privilegiju učestvovati u razvoju prve bosanskohercegovačke četkice za zube, Cawex, pružajući podršku u izradi prototipa četkice i njene ambalaže. Koristeći SLA tehnologiju 3D printanja, omogućio sam ovom startupu uštedu od preko 10.000 EUR. Cawex četkice odlikuje minimalistički dizajn i visokokvalitetni materijali, a dostupne su u dvije varijante: Cawex Medium s 1.800 vlakana i Cawex Ultra Soft s 5.700 vlakana, pružajući nježnu i efikasnu njegu zuba i desni.
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AMD Enduro Bike – 3D CAD model dizajniran za 3D Experience World 2021

Za kompaniju AMD dizajnirao sam 3D CAD model Enduro brdskog bicikla – AMD Enduro Bike, kreiran posebno za demonstraciju performansi novih AMD grafičkih kartica i procesora. Ovaj model predstavljen je na prestižnoj 3D Experience World 2021 konferenciji. Iako zbog pandemije nisam mogao prisustvovati događaju uživo, a konferencija se ove godine održavala online, AMD Enduro Bike je uspješno prikazan kao primjer kompleksnog 3D dizajna i inženjerske preciznosti, potvrđujući snagu vrhunskog hardvera u profesionalnim radnim okruženjima.

Organizacija izrade 3D printanih vizira za borbu protiv COVID-19

Kao jedan od organizatora Maker pokreta u Bosni i Hercegovini, učestvovao sam u izradi 3D štampanih vizira za medicinsko osoblje, pružajući im dodatnu zaštitu u borbi protiv COVID-19. Zdravstveni radnici, kao prva linija odbrane, svakodnevno su izloženi virusu i neophodna im je oprema koja smanjuje rizik zaraze. Mejkeri – inženjeri, inovatori i entuzijasti širom BiH – udružili su snage koristeći 3D tehnologije za proizvodnju i besplatnu distribuciju vizira bolnicama i domovima zdravlja. Ovaj projekat pokazao je snagu zajednice i inženjerskog duha – umjesto čekanja na donacije, sami smo stvorili rješenja koja su pomogla zaštiti onih koji brinu o svima nama.
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Predstavljanje SnowBike-a na 3D Experience World 2020 konferenciji

Na 3D Experience World konferenciji u Nashville-u, SAD, zajedno s AMD-om, predstavio sam SnowBike – moj najnoviji 3D CAD model dizajniran za demonstraciju snage AMD Radeon Pro grafičkih kartica i AMD Ryzen procesora. Ova prestižna konferencija okupila je 6.000 inženjera, dizajnera i inovatora, pružajući uvid u najnovije tehnologije koje oblikuju budućnost 3D dizajna i inženjeringa. SnowBike je pokazao kako vrhunski hardver omogućava rad sa složenim 3D modelima, potvrđujući snagu inovacija i tehnologije u industriji.

Završetak još jednog inovativnog projekta za AMD: 3D CAD model SnowBike

Nakon uspješne saradnje s kompanijom AMD, završio sam dizajn SnowBike-a – detaljno izrađenog 3D CAD modela s više od 2000 dijelova. Ovaj model igra ključnu ulogu u demonstraciji najnovijih AMD Radeon Pro grafičkih kartica i AMD Ryzen procesora, posebno dizajniranih za profesionalce – inženjere, arhitekte, dizajnere i sve one koji rade s kompleksnim 3D modelima. SnowBike je više od koncepta – to je test izdržljivosti i snage AMD-ovih hardverskih rješenja, prikazujući vrhunske performanse u radu s visokopoligonalnim modelima i naprednim renderima.
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Unreal Tractor - Epic Games

Dizajnirao sam CAD 3D model traktora za kompaniju Epic Games, posebno za testiranje mogućnosti Unreal Engine-a. Ovaj model predstavljen je na brojnim međunarodnim konferencijama, uključujući Solidworks World, gdje su kompanije NVIDIA i Lenovo koristile moj 3D CAD model kako bi demonstrirale snagu svojih najnovijih grafičkih kartica i radnih stanica. Njihove prezentacije su istakle performanse hardverskih komponenti i efikasnost Unreal Engine-a u radu s izuzetno složenim 3D CAD modelima.

TraceBrace narukvica za zaštitu žena i djece

Dizajnirao sam i razvio TraceBrace – narukvicu povezanu s mobilnom aplikacijom za hitne situacije. Nakon kupovine, potrebno je instalirati aplikaciju putem Google Play ili Apple Store-a, pokrenuti je i pratiti uputstva za inicijalnu sinhronizaciju. Aplikacija omogućava unos neograničenog broja telefona i pratećih poruka. U slučaju opasnosti, dovoljno je pritisnuti dugme na narukvici nekoliko sekundi dok uređaj ne zavibrira – tada se poruke automatski šalju zajedno s vašom trenutnom lokacijom. Dodatno, aplikacija nudi live tracking, omogućavajući primatelju poruke da vas prati dok ste online. Također, možete postaviti sigurnosni radijus koji, pri nagloj promjeni lokacije, automatski aktivira slanje novih poruka – što može biti ključno u situacijama poput kidnapovanja.

Razvio sam 3D printani endoskop za edukaciju doktora u Švicarskoj i EU

Za kompaniju Simedis uspješno sam razvio finalni proizvod endoskopske kamere namijenjene za laparoskopiju. Glavni cilj ovog projekta bio je razvoj visokokvalitetnog edukacijskog rješenja za obuku doktora u Švicarskoj i širom Evropske unije, uz značajno smanjenje troškova proizvodnje. Poseban fokus stavljen je na optimizaciju dizajna kako bi se postigla pristupačna cijena, a da se pritom zadrže visoki standardi kvaliteta. Kao rezultat, finalni proizvod je uspješno prilagođen za serijsku proizvodnju korištenjem napredne tehnologije 3D printanja.

AMD koristi 3D model DR.PAX-a za premijernu prezentaciju 7nm GPU-a na COMPUTEX 2018

Kompanija AMD ovaj put koristi 3D model DR.PAX-a za prezentaciju svoje najnovije tehnologije u oblasti grafičkih kartica, konkretno za prvu svjetsku prezentaciju "7nm GPU 32GB HBM2" grafičkih kartica. Prezentacija je održana na vodećem globalnom ICT i IoT sajmu "COMPUTEX 2018" na Tajvanu. Ovaj uspjeh dodatno potvrđuje da najveće svjetske kompanije prepoznaju visoki kvalitet rada.
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Promocija macOS verzije Radeon ProRender-a za programe Blender i Maya sa 3D modelima DR.PAX-a

Saradnja sa kompanijom AMD se nastavlja, a sada možete vidjeti 3D modele DR.PAX-a koji se koriste za promociju macOS Radeon ProRender-a za programe Blender i Maya. Renderi su ovog puta urađeni u programu Cinema 4D od strane dizajnera Glen Johnsona.
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DR.PAX-ov 3D model za testiranje i promociju AMD Radeon Pro grafičkih kartica

Ovaj put je DR.PAX sarađivao sa kompanijom AMD, koja je izrazila želju da koristi popularni 3D model motocikla za testiranje i promociju svojih najjačih grafičkih kartica iz serije Radeon Pro, namijenjenih CAD korisnicima, inžinjerima i dizajnerima. Adi Pandžić je izvršio redizajn motocikla u "AMD stilu" i još jednom potvrdio kvalitet svojih 3D modela, opravdavajući očekivanja još jedne velike kompanije poput AMD-a.
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DR.PAX medju TOP 40 inžinjera na GRABCAD.com

DR.PAX je trenutno medju TOP 40 od preko 4 000 000 inžinjera i dizajnera na popularnoj stranici GRABCAD.com. Ovo je velika vijest za nas kao tim mladih inžinjera iz Bosne i Hercegovine i mislimo da predstavlja veliku reklamu za našu zemlju. Takodjer svoj profil maksimalno koristim kako bi promovisao mlade inžinjere iz BiH i predstavio njihove radove iz oblasti inžinjeringa i produkt dizajna. Ukoliko se bavite 3D modeliranjem i produkt dizajnom, slobodno mi šaljite vaše 3D modele kako bi ih predstavio na GRABCAD.com preko svog profila i učinio promociju samih Vas.
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Renderi 3D modela DR.PAX-a za reklamu nVIDIA QUADRO grafičkih kartica

Jedan od najvećih proizvođača grafičkih kartica, NVIDIA, koristi render (fotorealističnu sliku) koji je izradio DR.PAX, kako bi predstavio svoje najjače QUADRO grafičke kartice za CAD korisnike, s posebnim fokusom na korisnike programa za 3D modeliranje poput Solidworks-a. Ovo je još jedan primjer kvaliteta DR.PAX-a u oblasti 3D dizajniranja i produkt dizajna.
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Bio sam na konferenciji SOLIDWORKS WORLD 2018 u Los Angelesu

Ovu godinu DR.PAX sigurno pamti po odlasku na konferenciju Solidworks World 2018 u Los Angeles. Nevjerovatan trenutak bio je poziv od kompanije AMD da zajedno sa njima prisustvuje SWW2018. DR.PAX je bio zadužen da zajedno sa njima prezentuje njihov novi proizvod, dodatak za Solidworks, ProRender, te isti testira korištenjem svojih 3D modela. Izgledalo je nestvarno stajati rame uz rame sa ključnim ljudima kompanije AMD, inžinjerima i developerima koji razvijaju njihovu tehnologiju. Takođe, DR.PAX je imao priliku da se upozna i razgovara sa ljudima i kompanijama koje je do tada gledao samo na internetu. Ovo je bilo jedno nevjerovatno iskustvo za DR.PAX-a, mladog inžinjera iz BiH, pogotovo kada je prolazio pored štanda kompanije HP i gledao kako prezentuju posljednju VR tehnologiju korištenjem njegovog 3D modela.
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Prezentacija HP Z VR Backpack PC sa 3D modelom DR.PAX-a

Dizajner Adi DR.PAX Pandžić izradio je 3D model za kompaniju HP, koji je korišten za testiranje i promociju njihovog novog proizvoda, HP Z VR Backpack PC-a, na najvećoj Solidworks konferenciji SWW18, koja se ovog puta održala u Los Angelesu. Takođe, imao je čast prisustvovati ovoj konferenciji, gdje je imao priliku isprobati novu VR tehnologiju kompanije HP i "poigrati" se sa vlastitim 3D modelom.
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UnrealBike za kompaniju EpicGames i UnrealEngine

Još jedan "prezahtijevan" projekat sam završio za kompaniju EpicGames i njihove partnere HP i Intel. Radi se o 3D modelu izradjenom u Solidworks-u koji će koristiti za testiranje i prezentaciju VR tehnologije za inžinjere i produkt dizajnere a ne samo za igrice. UnrealEngine je ovaj put uradio nešto i za nas inžinjere, pa sada možemo svoje 3D CAD modele importovati preko UnrealEngina u svijet VR tehnologije i tek sad virtuelna stvarnost će da čini čuda.
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PINKI SportBike 3D model za prezentaciju i testiranje programa 3DS SIMULIA

3DS Dassault Systemes kompanija koja je vlasnik najpopularnijih programa za inžinjere i dizajnere kao što je Solidworks, Catia i dr. koristi "PINKI SportBike" 3D model za promociju i testiranje svog programa SIMULIA. SIMULIA je programsko rješenje temeljeno na u praksi dokazanoj Abaqus tehnologiji za realistične fizikalne simulacije ponašanja proizvoda. Omogućuje korisnicima istražiti, optimizirati i ocijeniti realno ponašanje proizvoda i njegovih performansi, a s ciljem povećanja kvalitete i učinkovitosti. Koristi se za jednostavne statičke analize kao i za složene nelinearne analize poput multi-fizikalnih pojava, „crash“ testova, balistike, zamora materijala, dinamike fluida, elektromagnetizma, raspodjele topline itd.
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Uspješno završena radionica "Solidworks + 3D Print + IoT"

Uspješno smo završili prvu sezonu radionice "Solidworks+3D Print + IoT" u saradnji sa našim partnerima kompanijom NETWORKS. Radionica je održana u prostorijama CGPdesign MakerSapce-a u zgradi Networks kompanije. Ovo je bilo fantastičnih dva mjeseca druženja sa studentima Mašinskog i Elektrotehničkog fakulteta u Sarajevu, gdje smo sa njih 12 studenata uspješno napravili dvije potpuno funkcionalne robotske ruke. Cijela ideja radionice je bila da studenti nauče Solidworks, program za 3D dizajniranje, 3D Printanje i Internet of Things tehnologije, te kroz ova tri modula naprave virtuelni 3D model robotske ruke, potom isti 3D Isprintaju i kroz IoT tehnologiju omoguće funkcionisanje. Ono čime sam jako ponosan jeste što smo im ovo omogučili potpuno besplatno uz podršku naših partnera i sponzora: MarketMakers, 3D Republika, Strojotehnika, Solidworks, RedBull, Oxygen d.o.o, Solution 404, 3Down, DIZart CNC.
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Pametni kofer s prilagodljivom zaprem

Završio sam razvoj koncept dizajna pametnog kofera, koji olakšava putovanja! Ovaj kofer omogućava korisnicima da prilagode njegovu zapreminu prema vlastitim potrebama, čime se eliminiše problem prevelike ili premale prtljage. Pored toga, integrisana vaga automatski mjeri masu kofera, pomažući putnicima da izbjegnu dodatne troškove zbog prekoračenja dozvoljene težine prtljaga. Kako biste uvijek znali gdje se vaš kofer nalazi, ugrađeni GPS sistem osigurava praćenje u realnom vremenu – posebno korisno u slučaju gubitka na aerodromima. Također, kofer sadrži powerbank, omogućavajući vam punjenje mobilnih uređaja dok čekate let. Ovim inovativnim rješenjem, putovanja postaju jednostavnija, praktičnija i bezbrižnija!

DR.PAX YouTube

Fakultet ili ne? – Prava odluka za tvoju budućnost

Ovaj serijal donosi iskren razgovor o jednoj od najvažnijih odluka za mlade ljude – da li upisati fakultet ili ne. Kroz nekoliko epizoda obrađuju se teme poput donošenja prave odluke o studiju, izbjegavanja najčešćih grešaka, mogućnosti uspjeha bez diplome i svega što je za to potrebno, razloga zbog kojih fakultet možda i nije pravi izbor te pravih vrijednosti koje fakultet nudi, poput novih prilika, znanja i inspirativnih ljudi. Serijal je vodič za maturante i sve mlade koji žele jasniju sliku o svojoj budućnosti i žele donijeti odluku koja najbolje odgovara njima, a ne drugima.
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Nauči SolidWorks – Basic | Besplatan YouTube serijal

Na YouTube kanalu DR.PAX možete potpuno besplatno savladati osnove 3D CAD modeliranja u programu SolidWorks kroz serijal "Nauči SolidWorks – Basic". Ovaj serijal je idealan za početnike koji žele steći čvrste temelje u 3D modeliranju, bilo da su mašinski inženjeri, dizajneri, makeri ili studenti tehničkih nauka. SolidWorks je jedan od najpopularnijih i najmoćnijih alata za 3D modeliranje u industriji, poznat po svojoj intuitivnosti i širokoj primjeni u inženjerskom dizajnu, proizvodnji i razvoju proizvoda. Njegovo poznavanje otvara vrata ka brojnim profesionalnim prilikama i omogućava bržu i efikasniju realizaciju ideja. Pridružite se i započnite svoje SolidWorks putovanje već danas!
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Pripremite se za CSWA certifikat | Besplatan YouTube serijal

Na YouTube kanalu DR.PAX možete potpuno besplatno pratiti serijal osmišljen za pripremu i uspješno polaganje SolidWorks CSWA certifikata. CSWA (Certified SolidWorks Associate) je međunarodno priznat certifikat koji potvrđuje osnovno znanje i vještine u 3D modeliranju, a posjedovanje ovog certifikata značajno povećava konkurentnost na tržištu rada. Inženjerima, dizajnerima i svima koji koriste SolidWorks, CSWA certifikat otvara vrata ka profesionalnim prilikama, dok poslodavcima pokazuje da kandidat ima solidno razumijevanje ključnih funkcionalnosti softvera. Ako želite unaprijediti svoje CAD vještine i istaknuti se u industriji, ovaj serijal je pravi izbor za vas!
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Nauči 3D Printanje | Besplatan YouTube serijal

Na YouTube kanalu DR.PAX otkrijte svijet 3D printanja kroz besplatan serijal "Nauči 3D Printanje"! U ovom serijalu istražujemo šta je 3D printanje, kako funkcioniše, njegovu fascinantnu historiju i razvoj, ali i konkretne projekte koje sam lično printao. Bez obzira jeste li početnik, inženjer, dizajner ili maker, ovaj serijal će vam pomoći da bolje razumijete tehnologiju koja mijenja način na koji dizajniramo i proizvodimo. Ako vas zanima kako 3D printanje može revolucionirati proizvodnju, prototipiranje i kreativno izražavanje, pridružite se i naučite sve što trebate znati o ovoj inovativnoj tehnologiji!
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10 najčešćih grešaka koje studenti prave tokom učenja i studiranja | Besplatan YouTube serijal

Na YouTube kanalu DR.PAX otkrivamo najčešće greške koje studenti prave tokom učenja i studiranja – i kako ih izbjeći! U ovom serijalu govorimo o ključnim problemima koji utiču na efikasnost učenja, poput nedostatka planiranja, lošeg upravljanja vremenom, pasivnog učenja i prevelikog oslanjanja na memorisanje umjesto razumijevanja. Također ćemo analizirati uticaj distrakcija, zanemarivanje zdravih navika i nedostatak samopouzdanja, kao i strategije za bolje rezultate na ispitima i u akademskom životu. Ako želite učiti pametnije, a ne samo više, pridružite se i saznajte kako poboljšati svoje studijske navike i postići akademski uspjeh!
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Razvoj proizvoda

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3D Print

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3D Print u medicini

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Edukacije

Edukacije

Ukoliko ste zainteresovani za online, privatne ili in house edukacije osoblja vaše kompanije, siguran sam da vam u tome mogu pomoći.

Solidworks

Danas jedan od najpopularniji CAD programa za 3D modeliranje jeste Solidworks. Veoma lagan za učenje ali istovremeno sa respektabilnim mogućnostima da odgovori najtežim izazovima inžinjera mašinstva, elektrotehnike, građevine, dizajnerima, arhitektama i svima onima koji se bave 3D dizajniranjem. Svojim alatima koji su laki za učenje SolidWorks omogućava dizajnerima da brzo i lako skiciraju svoje ideje, “eksperimentišu” sa karakteristikama i dimenzijama i stvaraju 3D modele i detaljne tehničke crteže.

3D Print

Jedna od najpopularnijih tehnologija izrade novog proizvoda jeste 3D printanje. Dizajneri, inženjeri, umjetnici i naučnici svakodnevno koriste 3D printere te pritom šire granice onoga što se može učiniti. Bilo da se koristi za osobnu primjenu ili proizvodnju, 3D printeri štede vrijeme i novac te ubrzavaju razvoj inovacija u gotovo svakoj industriji. Korištenje 3D printera nije zahtjevno kako zvuči na prvu, tako da ga mogu koristiti i djeca. 3D modeli, prototipovi, nakit, proteze u stomatologiji i medicini, alati, igračke i drugi proizvodi se danas izrađuju na 3D printerima.

O meni

Adi Pandžić

Adi Pandžić je doktor nauka iz oblasti mašinskog inžinjerstva sa specijalizacijom u materijalima za 3D printanje. Također, i docent na Mašinskom fakultetu u Sarajevu, koordinator za ispitivanje materijala – Laboratorija za ispitivanje polimernih materijala. Stručnjak je u oblasti 3D dizajna (Solidworks) i 3D printanja. Kao produkt dizajner, radio je za kompanije kao što su NVIDIA, AMD, Intel, HP, EpicGames (Unreal Engine), Dassault Systemes i mnoge druge. Ima iskustva u radu sa više od 1000 studenata kao edukator/mentor. Godine 2015. osvojio je "Grabcad Golden Gear Award" kao mentor i glavni dizajner sa svojim timom studenata, u konkurenciji sa više od 4 miliona inženjera i dizajnera. 2018. godine osvojio je "Projekt godine 2018" kao najbolji projekt dizajniran pomoću Solidworks-a. Također, 2022. godine, kompanija Ultimaker prepoznala je moj rad u oblasti 3D printanja, te sam bio na "Ultimaker Innovators listi 2020". Radio sam sa velikim brojem startupa širom BiH, koji su danas prerasli u ozbiljne kompanije.

SOLIDWORKS CERTIFIKATI:
CSWA, Associate Additive Manufacturing
CSWA, Solidworks Associate Mechanical Design
CSWP, Solidworks Professional Mechanical Design

SOLIDWORKS CHAMPION

Nauka

Enhancing student performance with multicolored 3D printed neuroanatomical models in veterinary education

Background The neuroanatomy course consistently presents significant challenges, primarily due to the short lifespan of formalin-preserved brain specimens and their restricted availability. Numerous studies have evaluated the strengths and limitations of alternative resources for neuroanatomy education, with a particular focus on technologybased learning methods. This study aimed to assess the effectiveness of integrating 3D printed models into the neuroanatomy curriculum and to evaluate student satisfaction with their use. Methods The experimental group consisted of the first-year students enrolled in the integrated study program at the University of Sarajevo-Veterinary Faculty during the summer semester of the academic year 2022/2023. The course was organized using 3DP models for 15 h, while during the remaining three hours formalin-preserved specimens were utilized. Data obtained from this cohort were compared with the results of the previous two cohorts (2021–2022 and 2020–2021), who studied veterinary anatomy exclusively using formalin-preserved specimens. Results The neuroanatomy test scores improved in the experimental group compared to the two control groups. The students exhibit positive attitudes and report high satisfaction with using 3DP models. They support innovative teaching methods and find that the colored segments of the models enhance recognizability of different anatomical structures, highlighting the didactical value of 3DP models. Conclusion Overall, study demonstrated that 3DP models were highly beneficial for neuroanatomy learning, pedagogically useful and well-received by students.
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Influence of Infill Pattern on Ballistic Resistance Capabilities of 3D-Printed Polymeric Structures

Recent technological advances have expanded the use of 3D-printed polymer components across industries, including a growing interest in military applications. The effective defensive use of such materials depends on a thorough understanding of polymer properties, printing techniques, structural design, and influencing parameters. This paper analyzes the ballistic resistance of 3D-printed polymer structures against 9 × 19 mm projectiles. Cuboid targets with different infill patterns—cubic, grid, honeycomb, and gyroid—were fabricated and tested experimentally using live ammunition. Post-impact, CT scans were used to non-destructively measure projectile penetration depths. The honeycomb infill demonstrated superior bullet-stopping performance. Additionally, mechanical properties were experimentally determined and applied in FEM simulations, confirming the ability of commercial software to predict projectile–target interaction in complex geometries. A simplified analytical model also produced satisfactory agreement with experimental observations. The results contribute to a better understanding of impact behavior in 3D-printed polymer structures, supporting their potential application in defense systems.
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Sensitivity of Engineering Critical Assessmentof Through-Thickness Axial Flawson Pressure Equipment

This paper deals with a sensitivity analysis of engineering critical assessment, using a fracture assessment diagram of through-thickens axial flaws on pressure equipment. Basic option calculations are performed per BS 7910, using engineering fracture mechanics principles, followed by the provision of assessment points. For evaluation purposes, arbitrary design properties of pressure equipment and temperature-dependent materials properties were used. Several through-thickness axial flaw sizes were used for critical assessment. Furthermore, the sensitivity of critical assessment is evaluated by varying stress states and material fracture toughness. Finally, the sensitivity analysis shows how axial flaw growth may become critical, or its acceptability, depending on varying stress states and temperature-dependent material properties, on selected pressure equipment.
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Advancing Phantom Fabrication: Exploring 3D-Printed Solutions for Abdominal Imaging Research

The development of novel medical imaging technologies and treatment procedures hinges on the availability of accurate and versatile phantoms. This paper presents a cost-effective approach for creating anthropomorphic abdominal phantoms. Methods: This study proposes a cost-effective method using 3D printing and readily available materials (beeswax, plaster, and epoxy resin) to create high-fidelity anthropomorphic abdominal phantoms. The three-dimensionally printed phantoms exhibited X-ray attenuation properties closely matching those of human tissues, with measured Hounsfield unit (HU) values of −115.41 ± 20.29 HU for fat, 65.61 ± 18.06 HU for muscle, and 510 ± 131.2 HU for bone. These values were compared against patient images and a commercially available phantom, and no statistically significant difference was observed in fat tissue simulation (p = 0.428). Differences were observed for muscle and bone tissues, in which the 3D-printed phantom demonstrated higher HU values compared with patient images (p < 0.001). The 3D-printed phantom's bone simulation was statistically like that of the commercially available phantom (p = 0.063). Conclusion: This method offers a cost-effective, accessible, and customizable alternative for abdominal phantoms. This innovation has the potential to accelerate advancements in abdominal imaging research, leading to improved diagnostic tools and treatment options for patients. These phantoms could be used to develop and test new imaging techniques with high accuracy.
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Experimental Study of Tensile Mechanical Properties of FDM 3D Printed Material and Techno-Economic Analysis Using Definitive Screening Design

In this study impact of various FDM printing parameters on tensile mechanical properties of FDM printed PLA material is investigated. Additional techno-economic analysis is performed to assess the effects of printing parameters on the printing time and material consumption. Definitive screening design (DSD), a relatively new experimental design, is proposed for designing experiments as it enables integration of screening and optimization experiments. Analysis of variance (ANOVA) and regression analysis is performed on experimental data to assess impact of FDM printing parameters on the maximum tensile force, printing time and material consumption. The results indicate that the most influential FDM printing parameters on the maximum tensile force, printing time and material consumptions are the layer height, wall thickness and infill density. Maximum tensile force and printing time are highly affected by printing speed. Developed regression models for prediction of all three responses are confirmed by additional experiments.
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Advances in Additive Manufacturing Application in Military Industry

Additive manufacturing (AM) is recognized as a valuable method for producing functional parts in many global industries. It has been increasingly applied even in military manufacturing companies due to its specific characteristics. What started as a simple technique several decades ago, mostly used for rapid prototyping, now takes an important place in military industry when it comes to producing completely functional parts and mechanisms for weapon and different types of equipment. Understanding of different 3D printing methods and compatible materials allows engineers to create standard parts with reduced manufacturing costs and parts that are difficult to machine. One of the crucial benefits of 3D printing application in military industry is flexibility in manufacturing process, especially in terms of production site mobility. That literally means that it is now possible for soldiers to create new parts on 3D printers directly in battlefield, just by receiving right files for 3D printing from engineers. This paper reviews advances in AM application for military industry through different examples of 3D printed weapon and military equipment. Relevant 3D printing technologies are described, along with the discussion of potential problems in this area of manufacturing and possible solutions. The perspective of this method was analyzed based on current challenges, compatibility with experimental techniques and numerical methods, along with some suggestions for modernization and new areas of military application.
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Design, Manufacturing and Quality Assessment of 3D-Printed Anthropomorphic Breast Phantom for Mammography

Radiological anthropomorphic phantoms are objects that mimic patient’s anatomy when imaged by x-rays. These objects play a major role in optimizing radiation dose and image quality, allowing repeated exposure without exposing patients to harmful ionizing radiation. The goal of this study was to create a three-dimensionally-printed (3D-printed) phantom that would allow production of images that closely match those of human breast produced in digital mammography. We determined the attenuation properties of the Gray V4 resin using an imaged step-wedge. Gray values in image were associated with corresponding material thickness and a real mammogram was converted to two-dimensional (2D) matrix with elements whose values correspond to material thickness. Geometrical corrections for perspective and projection were taken into account. A standard triangle language (STL) file was used as input for the 3D printer. The quality of the printed phantom was evaluated by comparing its images to those of the real patient mammogram using different quantifying measures in spatial and frequency domain. The calculated similarity index (SSIM) was approximately 0.99, which indicates that SLA 3D printing technology can be successfully utilized to produce mammography phantoms.
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Modelling Influence of Heat Input on GMAW Fillet Weld Geometry

One of the most often used welding processes in manufacturing components made of unalloyed structural steels is Gas Metal Arc Welding (GMAW). It is a relatively simple and cost-effective process providing high deposition rates and productivity. Moreover, it can be combined with other processes and/or fully robotized, both of which improve productivity even further. However, maintaining quality control of welds at these high productivity rates can be rather challenging task. There are standards describing the acceptance levels and corresponding weld quality, with some of the considered criteria based on the visible weld geometry. It would be beneficial to connect welding parameters with the weld geometry, so that deviation from defined geometry causes correction of welding parameters. This paper describes influence of heat input on leg size and penetration for GMAW fillet welds of unalloyed steel with thicknesses of 4 and 8 millimetres in horizontal position, with varied parameters being welding current and speed. Dependence is described through models based on linear regression analysis.
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A Review of FFF 3D Printed Polymer Materials: Filaments, Physical Aspects in the Formation, Mechanical Properties and Standard Testing

The objective of this paper is to provide a comprehensive description and definition of Fused Filament Fabrication (FFF) 3D printed polymer materials, based on an extensive review of the relevant literature and previous research. The review covers the fundamental materials used in FFF technology, known as filaments, and provides a detailed analysis of the physical aspects involved in the formation of FFF printed polymer materials. Furthermore, the paper presents the key factors that influence the mechanical properties of FFF printed polymer materials and describes the testing methods used to evaluate these properties, including the relevant testing standards. The research findings aim to contribute to the development of a deeper understanding of FFF printed polymer materials and their properties, as well as to provide guidance for future research in this field.
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Influence of Nozzle Diameter on Tensile and Flexural Mechanical Properties of FDM 3D Printed PET-CF Material

Fused Deposition Modeling (FDM) is a widely researched and applied technology in the additive manufacturing industry. Extensive research is conducted on FDM due to the numerous factors influencing the material properties of 3D printed products. This study focuses on one such critical parameter: nozzle diameter. Nozzle diameter impacts not only the mechanical properties of FDM printed materials but also surface quality and dimensional stability. Specifically, this research investigates the effect of nozzle diameter on the tensile and flexural mechanical properties of PET-CF material (PET reinforced with chopped carbon fibers), along with its influence on printing time, which directly affects the cost of the final product. The study results demonstrated that nozzle diameter significantly affects the tensile and flexural mechanical properties of FDM printed PET-CF material. Additionally, nozzle diameter was found to influence the total printing time.
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The Effect of Ultraviolet Radiation on Mechanical Properties of Fused Deposition Modeling 3D Printed Materials

This study investigates the influence of ultraviolet (UV) radiation on the mechanical properties of Fused Deposition Modeling (FDM) 3D printed materials, specifically polycarbonate (PC) and polylactic acid (PLA) specimens. The research involves conducting experiments on five test specimens of each material exposed to UV radiation and comparing their mechanical properties to those of five control specimens that remain unexposed. The results reveal a significant mean difference between the mechanical properties of the control and UV-exposed materials. UV radiation caused a decrease in tensile strength for the PC material, while the PLA material exhibited an increase in tensile strength. The impact of UV radiation on PLA was more substantial compared to PC. Flexural strength testing showed an enhancement in strength for the UV-treated materials, with UV treatment having a greater influence on the flexural strength of PLA compared to PC. The mechanical properties of PLA were more significantly impacted by UV radiation than those of PC. The study findings suggest that PC and PLA materials exhibit different responses to UV exposure, which may have implications for their practical applications. Further research is needed to fully understand the underlying mechanisms governing these divergent responses and to optimize the performance of each material under UV radiation.
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Investigating the Influence of Printing Orientation and Filament Drying on Tensile and Flexural Strength of FDM-Printed Carbon Fiber-Reinforced Polyamide Composites

The rapid advancement of additive manufacturing (AM), including Fused Deposition Modeling (FDM) technology, hinges significantly upon the continuous evolution of AM materials. To enhance the mechanical characteristics of these materials, filling of carbon or glass fibers has added to them. Consequently, this research delved into the analysis of a carbon fiber-filled polyamide composite. The primary objective was to investigate the impact of printing orientation and pre-printing material drying on the tensile and flexural mechanical properties. Tensile properties were analysed in accordance with ISO 527 standards, while ISO 178 standards were employed for the evaluation of flexural properties. The findings from this study showing the influence of printing orientation and pre-printing drying on both tensile and flexural properties, thereby contributing valuable insights to the field of AM materials development.
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Investigation and Prediction of Tensile, Flexural, and Compressive Properties of Tough PLA Material Using Definitive Screening Design

The material extrusion fused deposition modeling (FDM) technique has become a widely used technique that enables the production of complex parts for various applications. To overcome limitations of PLA material such as low impact toughness, commercially available materials such as UltiMaker Tough PLA were produced to improve the parent PLA material that can be widely applied in many engineering applications. In this study, 3D-printed parts (test specimens) considering six different printing parameters (i.e., layer height, wall thickness, infill density, build plate temperature, printing speed, and printing temperature) are experimentally investigated to understand their impact on the mechanical properties of Tough PLA material. Three different standardized tests of tensile, flexural, and compressive properties were conducted to determine the maximum force and Young’s modulus. These six properties were used as responses in a design of experiment, definitive screening design (DSD), to build six regression models. Analysis of variance (ANOVA) is performed to evaluate the effects of each of the six printing parameters on Tough PLA mechanical properties. It is shown that all regression models are statistically significant (p < 0.05) with high values of adjusted and predicted R2. Conducted confirmation tests resulted in low relative errors between experimental and predicted data, indicating that the developed models are adequately accurate and reliable for the prediction of tensile, flexural, and compressive properties of Tough PLA material.
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Penetration testing of 3D printed projectiles made of various types of polymers

This paper presented an experimental process of penetration testing of FDM 3D printed projectiles made of 5 different types of polymers. Phases of design and 3D printing procedure are described, along with details about materials. Experiment is conducted on an improvised setup with compressed air used for launching projectiles. Each material was tested with 3 projectiles launched at wooden boards. Muzzle velocity and penetration depth are measured and used for different calculations. Results show interesting and mostly unexpected penetration depth values of different materials. Based on several standards, some of the projectiles can be considered very dangerous and potentially lethal.
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Utilisation of 3D Printing in the Manufacturing of an Anthropomorphic Paediatric Head Phantom for the Optimisation of Scanning Parameters in CT

Computed tomography (CT) is a diagnostic imaging process that uses ionising radiation to obtain information about the interior anatomic structure of the human body. Considering that the medical use of ionising radiation implies exposing patients to radiation that may lead to unwanted stochastic effects and that those effects are less probable at lower doses, optimising imaging protocols is of great importance. In this paper, we used an assembled 3D-printed infant head phantom and matched its image quality parameters with those obtained for a commercially available adult head phantom using the imaging protocol dedicated for adult patients. In accordance with the results, an optimised scanning protocol was designed which resulted in dose reductions for paediatric patients while keeping image quality at an adequate level.
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Experimental Analysis and Comparation of Mechanical Properties of Standard Grey Resins, With and Without Post-curing, and Biocompatible SLA Printed Materials

Stereolitography (SLA) 3D printing is commonly used type of additive manufacturing (AM) technology in many industries. Definitely, the development of AM technologies depends on the development of AM materials. In this regard, one of the priorities is the analysis of mechanical properties as well as understanding the influence of different printing parameters on them. In this paper, four different SLA 3D printed materials are analysed: “Anycubic basic grey resin”, “IFUN denture clear”, “Formlabs Grey” and “BioMed Amber” resin. All materials are printed with 0,05 mm layer height. Also, for “Anycubic Basic Grey” and “Formlabs Grey resins, specimens are analysed with and without UV post-curing. Main goal of this paper is to compare tensile strength values of UV cured and non-cured specimens (UV cured are treated for 10 min in UV chamber) with mechanical properties of biocompatible resins, because there is a theory that UV curing not only helps the material to get better mechanical properties, but it also turns regular resin to the biocompatible one. Secondary goal is to discuss efficiency of 10 times cheaper SLA 3D printer vs an expensive opponent by comparing mechanical characteristics of their specimens along with economic sides. This research is an introduction to exploring and understanding effects of UV curing of basic resins, in order to use them in medicine, veterinary or dental medicine.
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Students' performance in teaching neuroanatomy using traditional and technology-based methods

The use of digital teaching resources became widespread and very helpful during the COVID-19 pandemic as an alternative to a traditional course with cadavers. Technologies such as augmented reality (AR), virtual reality (VR), 3D models, video lectures and other online resources enable three-dimensional visualization of the anatomical structures and allow students to learn more interactively. The aim of this study was to compare students' performance in the traditional anatomical courses in teaching neuroanatomy and technology-based learning methods such as video lectures, 3D models and 3D printed specimens. Four groups of first-year students of Veterinary Faculty established for the practical classes during the academic year 2021/2022 took part in this research. The total number of students participating in this research was 72. Each group attended separately the theoretical lecture with a demonstration based on a different technique; the control group used formalized specimens, while the three experimental groups used video lectures, 3D models and 3D printed specimens, respectively. Subsequently, all groups completed the same questionnaire testing their short-term memory of the neuroanatomical structures. After four weeks students were tested for their long-term memory of the neuroanatomy lecture with the follow-up test containing an identical list of questions. The test scores using video lectures and 3D printed models were significantly higher compared with the group that learned in the traditional way. This study suggests that alternative approaches such as technology-based digital methods can facilitate memorization of anatomical terms and structures in a more interactive and sensory engaging way of learning.
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Doktorska Disertacija: Prilog procjeni mehaničkih osobina FDM printanih polimernih materijala sa različitim dizajnom ispune

Disertacija istražuje uticaj dizajna ispune (oblik, gustina i ugao) na mehaničke osobine FDM printanih polimernih materijala. Cilj je razvoj metodologije i matematičkih modela za predviđanje zateznih svojstava. U teorijskom dijelu analizirani su postojeći radovi, FDM materijali i faktori koji utiču na osobine printanih dijelova. Eksperimentalno je ispitano 1344 uzorka od PLA, Tough PLA, PC i PETG sa različitim dizajnima ispune. Rezultati su analizirani statističkim metodama (ANOVA, Tukey test) i vizualizirani dijagramima. Razvijeni modeli validirani su analizom reziduala i koeficijentima determinacije. Na kraju je urađena tehno-ekonomska analiza, koja je pokazala značajan uticaj dizajna ispune na vrijeme printanja i potrošnju materijala, pri čemu je gustina ispune identifikovana kao ključni faktor za optimizaciju procesa.
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Product development and design inside Industry 4.0. From rapid prototyping to additive manufacturing

The paper explores importance of rapid prototyping technology, as an important part of Industry 4.0, in product development and design process. Current state of this technology is explored in detail, with special focus of places and processes where this technology plays important role inside Industry 4.0. Paper answers several questionssuch as: does this technology have its future inside Industry 4.0, is this technology integral part of Industry 4.0 or just one aspect, has the time come to call this technology rapid manufacturing (of final products) instead of rapid prototyping (of prototypes)?Industry 4.0 implies rapid prototyping of final products, not only its prototypes. Main representative of rapid prototyping technology is additive manufacturing. Today, additive manufacturing technologies do not only serve for prototyping. They are becoming increasingly used for manufacturing of final fully functional products. Product development and design process inside Industry 4.0 must be adopted to new market demands which implies fast development and design and fast manufacturing. The time from initial concept design to the final product manufacturing must be as short as possible. The paper provides answers to the above stated questions. In addition, real examples of product development and design of prototypes and real fully functional products are presented, with a special focus on products and prototypes developed in Bosnia and Herzegovina.
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Computed tomography tissue equivalence of 3D printing materials

Introduction Additive production refers to the process of prototyping, which allows the production of highly complex medical devices and products. Interpretation of additive manufacturing (AM) material in Computed Tomography (CT) has not been widely investigated. The aim of this study was to determine the CT number values of commercially available fused deposition modelling (FDM) and stereolithography (SLA) AM materials. Methods Total of 15 AM materials, 7 FMD and 8 SLA, were selected and scanned on CT to determine the HU value and appearance on the images. All test object were designed as rectangular blocks and after their production physical description were calculated. AM materials were scanned on CT operating at 80, 100, 120 and 135 kV. Results All materials correspond to a certain human tissue and they have uniformity when printed with 100% infill. CT number ranged from a minimum of −188.0 HU to a maximum of 189.1 HU, for FDM materials, and from −15.8 HU to 167.3 HU, for SLA materials. Conclusion Knowing the CT number of an AM materials can allow the design of medical or rehabilitation products with a specific appearance on CT images. Analysed and collected data can find application in the design and manufacture of immobilization devices that can be easily distinguished from other materials or human tissue. Implications for practice This study provides information that can be used in the design and fabrication of anthropomorphic diagnostic and therapeutic phantoms. There is significant potential for the use of AM material for sophisticated test objects when used in medical image modality testing. Knowing actual CT numbers of frequently used AM materials allows manufacturing anthropomorphic phantoms to investigate radiation doses in diagnostic radiology and radiotherapy.
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Influence of Printhead Nozzle Diameter on Mechanical Properties of FDM Printed PLA Material and Printing Time

There are various 3D printing parameters that affect the mechanical properties of FDM printed materials as well as the final price of the finished product. One of the influential factors on printing time is certainly the diameter of the print head nozzle. In this paper influence of print head nozzle diameter on the mechanical properties of FDM printed PLA material was analysed. Tensile and flexural mechanical properties were examined, and tensile strength, elastic modulus, flexural strength, flexural modulus, and strain are presented in results. Also, the influence of the nozzle diameter on the total printing time was analysed because the printing time directly affects the final price of the product.
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Tensile Mechanical Properties Comparation of PETG, ASA and PLA-Strongman FDM Printed Materials With and Without Infill Structure

Additive technologies have certainly brought many novelties into today’s industry. Also, the development of AM technologies directly depends on the development of AM materials themselves, so the examination of the mechanical properties of new AM materials is of great importance. The aim of this research is to examine the tensile mechanical properties of three different FDM 3D printed materials: PETG, ASA and PLA-Strongman. The advantage that certainly distinguishes AM technologies compared to classic production technologies is the production of materials with an infill structure. So, the tensile properties of the materials with and without the infill structure were also analysed. For all materials, tensile and yield strength, tensile strength at brake, elastic modulus and deformation at brake are analysed, compared, and presented in this paper.
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Mechanical properties comparison of PLA, tough PLA and PC 3D printed materials with infill structure – Influence of infill pattern on tensile mechanical properties

One of the advantages provided by fused deposition modelling (FDM) 3D printing technology is the manufacturing of product materials with infill structure, which provides advantages such as reduced production time, product weight and even the final price. In this paper, the tensile mechanical properties, tensile strength and elastic modulus, of PLA, Tough PLA and PC FDM 3D printed materials with the infill structure were analysed and compared. Also, the influence of infill pattern on tensile properties was analysed. Material testing were performed according to ISO 527-2 standard. All results are statistically analysed and results showed that infill pattern have influence on tensile mechanical properties for all three materials.
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Experimental Investigation on Influence of Infill Density on Tensile Mechanical Properties of Different FDM 3D Printed Materials

One of the advantages of FDM technology is the production of product materials with infill structure. In order to make the most of this advantage, the behaviour of FDM printed material with infill structure under different loads has to be analyzed and understood. Therefore, the goal of this experimental research is to analyze influence of infill density (100%, 80%, 60% and 20%) on tensile mechanical properties (tensile strength and elastic modulus) of PLA antibacterial nanocomposite, tough PLA and ABS-X 3D printed materials.
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Influence of Infill Design on Compressive and Flexural Mechanical Properties of FDM Printed PLA Material

Today, one of the fastest growing manufacturing technologies is certainly additive manufacturing, where there are several different product manufacturing processes, and one of the most famous is FDM 3D printing process. From literature review, it can be concluded that many parameters affect the final mechanical properties of FDM printed materials. Also, one of the great advantages provided by this technology is the production of product materials with an infill structure, which brings several advantages such as: reduced time of production, reduced material consumption, lower product weight and generally more economical production. The aim of this study is to analyse the influence of infill design on the compressive and flexural properties of FDM printed material. In particular, the influence of infill pattern and density for PLA FDM printed material was analysed. Based on the results of the statistical analyses, it can be concluded that the infill pattern and density affect the compressive and flexural strength and modulus of PLA FDM printed material.
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Influence of Layer Height, Build Orientation and Post Curing on Tensile Mechanical Properties of SLA 3D Printed Material

In this research, an experimental analysis of the influence of layer height, build orientation and post curing on the tensile mechanical properties of SLA 3D printed material was performed. The material "Grey Resin" from the manufacturer Fromlabs was specifically analysed. When it comes to layer height, four different layer heights were analysed, with 160, 100, 50, and 25 microns. Specimens were manufactured in three different build orientations (vertical, side and flat). All specimens were tested with and without post curing (30 min, 60 °C). The results in further text showed that the layer height, build orientation as well as the post curing have an impact on the tensile mechanical properties of the SLA "Grey Resin" material. Also, in addition to the effect on mechanical properties, the paper presents how these factors affect the time of 3D printing.
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Strength Comparison of FDM 3D Printed PLA Made by Different Manufacturers

Widely used additive manufacturing technique for plastic materials is Fused Deposition Modelling (FDM). The FDM technology has gained interest in industry for a wide range of applications, especially today when large number of different materials on the market are available. There are many different manufacturers for the same FDM material where the difference in price goes up to 50%. This experimental study investigates possible difference in strength of the 3D printed PLA material of five different manufacturers. All specimens are 3D printed on Ultimaker S5 printer with the same printing parameters, and they are all the same colour.
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Strain Rate Influence on Mechanical Characteristics of FDM 3D Printed Materials

One of the rapidly growing additive technology for polymer-based products is Fused Deposition Modeling (FDM), which is used for prototypes, single-part production and also small series production. Today, this technology is increasingly used for engineering purposes, and it is of great importance to know the mechanical properties of materials used in FDM technology, which are commonly thermoplastic polymers. The mechanical properties of materials are obtained by standard mechanical testing, but problem is that there are no official standards that define the method of mechanical testing of FDM materials. The aim of this study is to analyse the influence of the strain rate on tensile properties. Three different materials, PLA, tough PLA and carbon PLA, are examined. Strain rate was varied from 0,5 mm/min to 100 mm/min. The test was performed according to ISO 527-2. All specimens are 3D printed with 100 % infill and same 3D printing parameters.
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Strength Properties of PLA Material Obtained by Different Models of FDM 3D Printer

Additive manufacturing is technology that is widely used to produce good quality products with complex geometries. One of the most popular additive technology today is fused deposition modelling (FDM). Literature review is showing that many parameters have influence on mechanical properties of FDM printed materials. Influence of FDM 3D printer model on strength properties of printed PLA (polylactic acid) material with different infill density is presented in this paper. Testing specimens are printed with five different 3D printer models of the same manufacturer with the same material and 3D printing parameters. Aim was to investigate 3D printer model influence on strength properties of 3D printed PLA material. The results of this study could be useful for users and researchers in order to select appropriate printer model for particular purpose considering optimal relation of PLA material strength properties and FDM 3D printer model.
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Prediction of Geometry of Pulsed GMAW Fillet Welded Joints of Structural Steels

Gas Metal Arc Welding (GMAW) is nowadays widely used welding process for structural steels. It is highly efficient and can be easily automatized. Therefore, GMAW is particularly useful for welding of long sections in shop-floor conditions. Such components are prefabricated parts of ship hulls and bridges and parts of heavy machinery. Pulsed variant of GMAW is even more productive and efficient regarding use of filler material and welding time, often used as fully automatized or robotic process. However, such significant production rate requires efficient quality control of welds. The simplest way to do it is by visual inspection, which includes acquiring weld geometry and dimensions. That can be easily done by using optical measuring devices and cameras, which acquire necessary data directly after welding. However, this way of quality and process control needs relationship(s) between input (welding parameters and heat input) and output (weld geometry and dimensions). This paper presents principal relations between abovementioned inputs and outputs for single-pass fillet welds of structural steels. Considered output includes geometrical properties (fillet weld size, penetration, dilution, and reinforcement), while relations are described with fitting curves based on linear regression.
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Selection Charts for Structural Steels Regarding Design Criteria and Trending Properties

Existence of standardized materials and product standards for various products gives confidence in complete materialselection process. In case of welded steel products, respective product standards clearly define requirements for designand fabrication. Among many properties, four are mostly considered: strength, ductility, toughness, and weldability.Nowadays products are more demanding than ever, and it is not possible to consider single property anymore, but two oreven three of them. In such cases, selection charts are used, making material selection easier. This paper provides selectioncharts and corresponding design criteria defined in welded product standards for selected structural steel grades. Valuespresented in selection charts are acquired through own researches, as well as from available literature. Consideredstructural steels are grades with yield strength from 355 to 960 MPa, available in three mayor delivery conditions:normalized, thermo-mechanically treated, and quenched and tempered.
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Effect of Infill Type and Density on Tensile Properties of PLA Material for FDM Process

Fused deposition modeling (FDM) is a rapidly growing additive manufacturing technology for various applications in field of engineering. Mechanical properties of 3D printed materials in FDM technology depend on various parameters. Literature suggests that type and density of infill are parameters that affecting the mechanical properties of 3D printed materials, and also have direct influence on 3D printing time and amount of 3D printed material. In this paper influence of infill type and density on tensile properties, 3D printing time and amount of 3D printed material will be investigated and presented. Total of 13 different types of infill and for every type it will be tested 9 specimens with different infill density from 10% to 90%. Every specimen would be 3D printed of PLA material with same colour and 3D printing parameters, also at the same position on printer bed to maximally reduce influence of other factors on mechanical properties of material. The obtained results would give us a wider picture of how to maximally save on 3D printing time and amount of material consumed in the production, but to still keep required tensile properties.
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Influence of Carbon Fibers on Mechanical Properties of Materials in FDM Technology

While fused deposition modeling (FDM) is one of the most used additive manufacturing (AM)process today due to its ability to produce products with very complex geometries and with wide range of different thermoplastic materials. Engineers have the option of making parts with the most commonly used thermoplastics, such as ABS, PLA, PET-G, a variety of blends, as well as engineered thermoplastics for aerospace, medical, automotive, electronic and other specialty applications. The aim of this paper is to investigate tensile properties of carbon reinforced PLA and carbon reinforced PET-G materials, and make a comparison of carbon PLA with PLA and carbon PET-G with PET-G material. For every material it will be tested 2 specimens with different 3D printing orientation angle (0˚, 15˚, 30ånd 45˚) prepared according to ISO 527-2. Specimens would be 3D printed on Ultimaker 2+ with steel nozzle and under the same conditions of 3D printing, in order to reduce impact of unwanted factors on material tensile properties. The results of this paper will be useful to see whether it is profitable to use carbon-reinforced materials and whether they really increase the tensile properties of basic materials.
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Influence of Material Colour on Mechanical Properties of PLA Material in FDM Technology

Today, one of the most used material in FDM (fused deposition modelling) 3D printing technology is PLA (polylactic acid). On market today, there are many different companies that producing PLA material filament for 3D printers with different diameter and colours. Previous research showing that there are so many parameters in FDM technology that affect on mechanical properties of 3D printed material like layer height, infill density, temperature etc. Topic of this article is to investigate whether colour of PLA material effect on material tensile properties and in what amount. It will be tested more than 10 different colours of PLA material, and for every colour it will be tested 3 specimens. Specimens are prepared according to ISO 527-2, and all printed with same 3D printing parameters and with 100% infill. Also, all used materials are of same company and for every colour specimen will be 3D printed from same filament spool. All this is done to avoid other parameters to effect on material properties. The results of this study will be useful for colour selection of the PLA material without compromising the material tensile properties of 3D printed product.
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Development of Integrated Intelligent CAD System for Design of Cylindrical Helical Compression Valve Springs

This paper presents architecture and process of developing an integrated intelligent CAD system (IICAD) for designing helical compression springs named SPRINGER. This paper presents steps and procedures to develop IICAD system for helical compression springs, but can be used for other specific types of products. The system is developed in C# which is connected with Solidworks CAD system to save time during calculation and design of cylindrical helical compression valve springs (CHCV spring). After finishing calculation, SPRINGER system gives full report of calculation in PDF and 3D model of calculated spring in Solidworks that can be used for production, rapid prototyping, FEM analyse etc.
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Post Service Strength Properties at Elevated Temperature of Steel 14Mov6-3

Reliability and safety of thermal power plant components are issues that have become much more important in recent years, so the assessment of damage and of the risk associated with failure have become increasingly important. Records of operating conditions and preventive maintenance for a component that has failed, and for the system as a whole, are relatively good sources of background information. Direct post service evaluation represents an improvement over history-based methods, because no assumptions regarding material properties and past history are made. In order to investigate decrease of strength properties at elevated temperature after prolonged service, low-alloyed steel 14MoV6-3 exposed 194.207 hours to service conditions, has been compared with same, but virgin material. In addition to the standard strain rate test, tensile testing at elevated temperature 540 °C with high strain rate and slow strain rate is also performed. As a result of prolonged lifetime of exploited material in service there is a significant degradation of strength properties.
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Economical Aspects of Industrial FSW Application

Although FSW is relatively new joining technique, with still unexplained phenomenology of joint creation, it has been widely used in industry. Great applicability has been demonstrated, in particular for welding of various aluminium alloys in many different configurations. As a main advantages, over conventional joining techniques for such alloys, are considered possibility of welding profiles with complex geometries with thickness up to 50 mm, excellent metallurgical continuity, as well as possibility to avoid preheating and post weld heat treatment. However, main disadvantage of this process is inability to easily achieve optimal welding parameters, simply because there are no exact mathematical equations describing their mutual relations. This leads to necessity of test series examination. This paper giver overview of main economic advantages and disadvantages of this welding process, as well as comparison with conventional welding processes used for aluminium and its alloys. In this way, it has been estimated whether or not is justified to use FSW when alternative welding process is available.
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Advantages of MAG-STT Welding Process for Root Pass Welding in the Oil and Gas Industry

Abstract: This paper describesthe basics of modern MAG-STT welding process and its advantages for root pass welding of construction steels in oil and gas industry. MAG-STT welding process was compared with competitive arc welding processes (SMAW and TIG), which are also used for root pass welding on pipes and plates. After experimental tests, the obtained results are analyzed and presented in this paper.
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